diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 08b4c520938463fd989bba879d791a3e418efd39..b34b5cda5ae110aeec980b6ec7c2ec608490a093 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -236,7 +236,7 @@ config CMA_SIZE_PERCENTAGE
 
 choice
 	prompt "Selected region size"
-	default CMA_SIZE_SEL_ABSOLUTE
+	default CMA_SIZE_SEL_MBYTES
 
 config CMA_SIZE_SEL_MBYTES
 	bool "Use mega bytes value only"